diff --git a/reactos/include/psdk/winuser.h b/reactos/include/psdk/winuser.h
index 2d38fe2bf3e..56ddef53230 100644
--- a/reactos/include/psdk/winuser.h
+++ b/reactos/include/psdk/winuser.h
@@ -1803,6 +1803,12 @@ extern "C" {
 #define WM_HOTKEY 786
 #define WM_PRINT 791
 #define WM_PRINTCLIENT 792
+
+#define WM_DWMCOMPOSITIONCHANGED 0x031E
+#define WM_DWMNCRENDERINGCHANGED 0x031F
+#define WM_DWMCOLORIZATIONCOLORCHANGED 0x0320
+#define WM_DWMWINDOWMAXIMIZEDCHANGE 0x0321
+
 #define WM_HANDHELDFIRST 856
 #define WM_HANDHELDLAST 863
 #define WM_AFXFIRST 864